You said you want to know which dot on the sprocket lines up with the chain. The dot with the "e" lines up with a mark on top of the journal that bolts the cam into place. The other dot on the sprocket lines up with the dot on the timing chain.

The sprocket will only line up one way. If one dot lines up and the other doesn't, you know you have it wrong. When both line up, you have it correct.